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Somethimes the problem could be related that the Gateway on switch have not been set. From the global config mode:ip default-gateway x.x.x.xfor more info: http://www.cisco.com/en/US/products/hw/switches/ps628/products_configuration_guide_chapter09186...
VLAN's are reffered as Layer 2 Broadcast domains, this is only concerns ARP request en reply's, this does not mean to breakup layer 3 broadcast domains. As long you do not route between the VLANs (Inter-VLAN routing) than the VLANs are issolated from...